Air outlet device for ventilating systems



July 20, 1954 F. HONERKAMP 2,684,023

AIR OUTLET DEVICE FOR VENTILATING SYSTEMS Filed Oct. 19, 1949 I I 7/ l 143:1

INVENTOR K F 10 wieab'ichflonermn v BY mwpmg ATTO EY Patented July 20, 1954 AIR. corner. DEVICE FOR. VENTILATING. SYSTEMS Friedrich Honerkamp, New :.York, N. Y., assignor to Anemostatzi Corporationof America, New; ork; N-.Y-,.ar cor noration ,of Delaware Application 0etpberl9, 1949;,S'erial No, 122,312

4. Claims.

This invention relatesto air-distributing-de vices for effecting diffused; delivery-of; air-from air supply ducts into rooms and other enclosures for heating, cooling; ventilatingor other purposes, and hasparticular reference to improvements in air distributingdevices of the knowngeneral type comprising a plurality of successively smaller, open-ended, hollow, forwardlyfiaring members which are disposedsuccessively inwardly of and in spaced apart relationship to one another, whereby air delivered forwardly,

through the device is divided into a plurality-of separate streams and is deflected moreor less laterally from the device by. said members so that the air is delivered into the room or other enclosure in diffusedform over asubstantial portion of the area thereof.

In devices of the type referred to the flaring members may be of either frustoeconical form or frusto-pyramidal form. The latter form. is

desirable in many instancesbut, as heretofore produced, the frustorpyramidal members have had more or less sharply peakedridgesatth'eir corners where the ends oftheir fiat, inclined; sides meet, and these ridges have had the effect of dividing the air which is delivered; tow rd the corners of the devicesand of deflecting it' toward the sides of the-devices. As a consequence, practically all of the airwhichhas been supplied to devices of the typereferredto as heretoforeconr structed and which have flaring members offrusto-pyramidal form, has been delivered, from the sides of. the devices and, there has been little or no air delivered from the cornersofjthe devices, which has been highly disadvantageous since it usually is desirable to have substantially equal amounts of air delivered in all directions laterally from such devices.

Accordingly, the object of 'thepresent invention is to provide adevice ofjthecharacterreferred. to wherein the flaring membersthereof are of frusto-pyramidalform andwhereinjrusto-conical or substantially friusto-conicalmemr bars are combined with. said pyramidalfmembars in. such manner that substantially equal amounts of air are delivered in all directi0n5,lat erally from the device despite. the presence of more or less sharply peakedridgesatthecornflrs of the pyramidal members where the. ends of their fiat, inclined sides meet.

With the foregoing general objectin view the invention consists in a. device of the cha acter referred to which embodies, the novel features of. construction, combination and arrangement of parts as are illustratedv by wayof example in .the

2-; accompanying drawings and as will be hereinafter more fully described! and claimed.

In the accompanying drawings; wherein. the characters of reference: denote corresponding.

parts the difierent views Fig. 1 is a rear elevation of, an air. distributing device constructed in accordancew-ith the invention;

Fig. 2-is a centrallongitudinal section through the device.

Refer-ringto-the drawingsiin detail, it will be observed that the present air distributing device, according to the embodiment-thereof specifically illustrated, isof a known general: type comprise ing: a plurality of' successively smaller, openended, hollow, flaring members. IQ: of frustopyramidal form whichflare .towa-rdthefront. end F of the device, taper toward the rearend R of the-device, and which are disposed successively inwardly of .and' in. spacedv apart relationship to one-another to provide a plurality of successively smaller, forwardly flaring airpassageways I] therebet-ween;

A neck l2: extends rearwardly from the rear end of thelarger: or outermost member if) to adapt the device for connection with an air supply duct, and:when.air. issupplied. through said neckitiscdivided by the members. lii-intoa plurality ofseparate streamswhich flow through the passageways-11' and are deflected'laterally from the device by impingementagainst the rear faces of 'saidmembers. The air thereby. is delivered from the. device in diffused form throughout a substantial: area forwardly. and laterally relative to the device.

At the meeting. ends ofthefiat, inclined side walls-of themembers ltiare more. orless sharp ridges-13 which, ordinary devices of. the type illustrated; divide supplied air. directed forwardly towardl'the corners of saidrmembersand; deflect it toward' the sides; of said members; Consequently; in ordinary devices of the, type illustrated; practically. all of the air is delivered from thesides of: the: devices and littleor no air is delivered: from: the corners .of the devices, which is highly: disadvantageousv since it; is desirable to have-substantially equal: amounts of air delivered in all directionslaterallyfrom such devices Themembers m;- of-:' which there may beL any desired number, may have equal or unequal amountsof flare, as desired, and their rear ends may besuccessively-smaller so that they are:dis posed; successively inwardly of one another, as shown, whereby air isdelivered through each of the passageways H Alternatively, the: rear end of any of the members l9 may, in accordance with known practice and as disclosed for example in Kurth Patent No. 2,142,134 of January 3, 1939, be smaller than the rear end of the next smaller member so that its rear end is disposed inwardly with respect to the rear end of the said next smaller member so as to cause the supplied air to flow across the mouth or rear end of such passageway, thereby to cause a rearward or aspirating flow of air through such passageway and consequent mixing within the device of part of the supplied air with part of the room or other enclosure air. Moreover, the present device may be modified in various other ways in accordance with known practices. Essentially, however, the present invention resides in combining with certain or all of the flaring members It which act as deflectors for the supplied air, other flaring air deflector members or rings [4 of frustro-conical or substantially frusto-conical form which are so related to the flaring members In as to cause practically the same amount of air to be delivered from the corners of any given pasageway H as from the sides of such passageway.

In accordance with the invention and as illustrated in the drawings, the frustro-conical flaring members l4 are disposed, rearwardly of the pyramidal flaring members Iii, respectively, in

the path of flow of air supplied through the neck i2, and are of such lengths or depths and diameters and have such amounts of flare that they act to deflect the supplied air over at least the rear portion of said members if, and preferably well toward the front portion thereof, whereby the sharply peaked ridges l3 of said members iii have little effect in dividing and deflecting the air. In this connection the rear or smaller end of each of the flaring members i4 preferably is, as illustrated, of approximately the same diameter as the opening in the rear end of the member l immediately forwardly of said mem ber It, whereby said member 14 intercepts and deflects as much of the supplied air as practicable substantially without interfering with flow of the supplied air through the opening in the rear end of said immediately forwardly disposed member Iii. Also in this connection it will be noted that due to the square or other polygonal shape of the rear ends of the members In and to the circular or substantially circular shape of the members M, the mouths or rear ends of the passageways H are more widely open at their corners and are progressively constricted toward points midway between their corners by the members i4, whereby the supplied air is permitted to flow more freely toward the corners of the passageways I than toward points midway between said corners and is, in fact, urged by the members M to flow in this manner, whereby there is attained substantially as much air flow from the corners of said passageways H as from points between their corners. Indeed, the size, flare and other characteristics of any of the members l4 may be such in relation to the dimensions of the passageway i I through which it deflects the supplied air as to cause substantially equal amounts of air to flow through all portions of said passageway.

As will be understood, the present device may include only two members In and a single member 14 for deflecting air over the smaller of said members H3, in which event the member l4 need not be open at its smaller or rear end. As will I also be understood, the smaller of the members l4 may be closed at its smaller or rear end in any instance where it may be permissible or desirable not to have air delivered through the smaller or innermost of said members [0. Furthermore, it will be understood that in any given device of the present type, an air deflect-'- ing member or members l4 may be combined with only a single one or more of the members [0 rather than with each of said members l0;

As will be understood, the members In may be connected together in spaced apart relationship to each other either by means of struts in accordance with known practice or in any other suitable manner, and the members l4 may be mounted between said members I0 either by means of such struts or in any other suitable manner.

As will be apparent, the supplied air initially is deflected by the members [4 rather than by the inner or rear end portions of the members In and its deflection primarily is controlled by said members i4 so that, despite the pyramidal form of the members It and the ridges 3 at their corners, there may be attained, by a proper selection of the sizes and flare of the members M, delivery of substantially equal amounts of air from the corners as from other portions of any or all of the passageways l I.

From the foregoing description considered in connection with the accompanying drawing, it is believed that the construction and operation of the present air outlet device will be clearly understood and that its advantages will be appreciated. It is desired to point out, however, that while only a single structural embodiment of the invention has been illustrated and described, the same is readily capable of specifically different structural embodiments within its spirit and scope as defined in the appended claims.

I claim:

1. An air distributing device comprising an outermost hollow forwardly flaring member open at its rear end for supply of air to the device and open at its front end for escape of air from the device, the front end of said member being of rectangular shape, a second member similar to said outermost member disposed within and spaced from said outermost member, said second member being of forwardly flaring frustropyramidal form and being disposed symmetrically relative to said outermost member, and a forwardly flaring member of frustro-conical form disposed within said outermost member rearwardly of said second member to effect deflection outwardly with respect to said second member of air supplied to the device, the front end of said frustro-conical member being of a diameter greater than the width of the rear end of said frustro-pyramidal member.

2. An air distributing device comprising an outermost hollow forwardly flaring member open at its rear end for supply of air to the device and open at its front end for escape of air from the device, the-front end of said member being of rectangular shape, a second member similar to said outermost member disposed within and spaced from said outermost member, said second member being of hollow open-ended forwardly flaring frustro-pyramidal form and being disposed symmetrically relative to said outermost member, and a hollow open-ended forwardly flaring member of frustro-conical form disposed within said outermost member rearwardly of said second member to eflect deflection outwardly with respect to said second member of air supplied to the device, the rear end of said frustroconical member being of a diameter not greater than the width of the rear end of said frustropyramidal member.

3. An air distributing device comprising an outermost hollow forwardly flaring fiat-sided member of frustro-pyramidal form open at its rear end for supply of air to the device and open at its front end for escape of air from the device, a second forwardly flaring member of frustropyramidal form within and symmetrically disposed with respect to and spaced from said outermost member, and a forwardly flaring member of frustro-conical form disposed within said outermost member rearwardly of said second member to eiTect deflection outwardly with respect to said second member of air supplied to the device, the width of the space between said frustro-conical member and the sides of said outermost member being constricted toward the centers of the rear end portions of said sides of said outermost member so as to cause the supplied air to flow in substantially equal amounts through all portions of the space between said outermost member and said second member, the front end of said frustro-conical member being of a diameter greater than the width of the rear end of second member.

4. An air distributing device comprising an outermost hollow forwardly flaring flat-sided member of frustro-pyramidal form open at its 25 Number 6 rear end for supply of air to the device and open at its front end for escape of air from the device, a second forwardly flaring member of frustropyramidal form within and symmetrically dis- 5 posed with respect to and spaced from said outermost member, and a forwardly flaring member of frustro-conical form disposed Within said outermost member rearwardly of said second member to effect deflection outwardly with 10 respect to said second member of air supplied to the device, the width of the space between said frustro-eonical member and the sides of \said outermost member being constricted toward the centers of the rear end portions of said sides 15 of said outermost member so as to cause the supplied air to flow in substantially equal amounts through all portions of the space between said outermost member and said second member, the rear end of said frustro-conioal member being 20 of a diameter not greater than the width of the rear end of said second member.

References Cited in the file of this patent UNITED STATES PATENTS 

